Quote:
Originally Posted by stevej37
Just started raining here...I managed to get it into 8 by holding the rear end up, shifting with another hand and turning the crank all at the same time.
The pic shows the bright screw that the pivot rests on. (I'm tempted to back it out a quarter turn to allow the pivot to rest further back.?)

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Look at it closely in person. The black pieces are not lined up. Photo error or not, it sure looks like the chain is slightly angled left at the bottom idler wheel. Again, I can't say that is the cause of the problem. That many miles has to have had an effect. But I have straightened a few derailleurs in my time that were bent in for one reason or another.
They are very sensitive, that's all I know.
Also the chain looks dry and rusty. It might be that the chain doesn't react properly whatever that means.